遮音箱から放射される固体伝ぱ音の音圧の推定 : 多点加振に基づく推定

概要

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This paper proposes a method of estimating the sound pressure of structureborne sound included in noise radiated by an enclosure housing a machine that produces both noise and vibration. In this method, estimation is carried out without any change in the condition of installation of the machine using accelerations measured when the machine is in operation and frequency-response functions determined when the machine stops its operation. First, the theory of this method is briefly introduced. The frequency-response functions are determined by exciting multiple points on a machine housed in an enclosure. Then this method is tested using an experimental setup in which the enclosure houses an excitor and a speaker. It is shown that the estimated results agree well with the measured results. Finally, the error in the estimation is discussed.
1992-05-25